TITLE: GCN CIRCULAR NUMBER: 19510 SUBJECT: GRB 160504A: 15 GHz upper limits from AMI DATE: 16/06/08 15:19:48 GMT FROM: Kunal Mooley at Oxford U K. P. Mooley, T. D. Staley, R. P. Fender (Oxford), G. E. Anderson (Curtin), T. Cantwell (Manchester), C. Rumsey, D. Titterington, S. Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods, P. Scott (Cambridge), K. Grainge, A. Scaife (Manchester) The AMI Large Array robotically triggered on the Swift alert for GRB 160504A (Malesani et al., GCN 19382) as part of the 4pisky program, and subsequent follow up observations were obtained up to 10 days post-burst. Our observations at 15 GHz on 2016 May 04.85, May 05.88, May 07.82, May 11.90, and May 14.90 (UT) do not reveal any radio source at the XRT location (Goad et al., GCN 19386), with 3sigma upper limits of 93 uJy, 72 uJy, 129 uJy, 123 uJy, and 120 uJy respectively. We thank the AMI staff for scheduling these observations. The AMI-GRB database is a log of all GRB follow up observations with the AMI, and is available at http://4pisky.org/ami-grb/.